How to use Lockdown Mode: The extreme iPhone security feature that foiled even the FBI

ZDNET explains Apple's iOS Lockdown Mode, an extreme, reversible security setting intended for high-risk users (e.g., journalists, activists) that significantly restricts messaging, FaceTime, web features, device connections, and network behaviors to reduce attack surface and block many forensic access methods; the guide outlines how to enable it, manage limited exceptions, and disable it, noting a recent case where the FBI reportedly could not extract data from a locked iPhone with Lockdown Mode enabled.